Synopsis：Luna moves into Blackwood Villa when her mother remarries, becoming stepsister to feared tyrant Ethan. Publicly icy, he secretly protects her: warm milk at night, abandoning basketball to shield her from bullies, snatching a rival's love letter. As forum rumors explode, Luna faces public humiliation. At a school-wide ceremony, Ethan takes the microphone: "She is mine." Luna finally understands—all his ambiguous acts were quiet preparation to let her stand in the light.